Results 231 to 240 of about 973,387 (301)
Some of the next articles are maybe not open access.
Dynamically Tunable Attenuator on a Graphene-Based Microstrip Line
IEEE transactions on microwave theory and techniques, 2019In this paper, a novel type of dynamically tunable attenuator based on graphene is proposed. This type of attenuator is composed of one or two graphene sandwich structures (GSSs) and a microstrip line.
An-Qi Zhang +3 more
semanticscholar +1 more source
IEEE Journal of Solid-State Circuits, 2018
A compact, low loss, wideband digital step attenuator (DSA) is presented. The proposed DSA utilizes amplitude/phase-compensated T-type attenuator cells, in which the locations of poles and zeros are manipulated for minimizing variations in attenuation ...
I. Song, Moon-Kyu Cho, J. Cressler
semanticscholar +1 more source
A compact, low loss, wideband digital step attenuator (DSA) is presented. The proposed DSA utilizes amplitude/phase-compensated T-type attenuator cells, in which the locations of poles and zeros are manipulated for minimizing variations in attenuation ...
I. Song, Moon-Kyu Cho, J. Cressler
semanticscholar +1 more source
IEEE Transactions on Antennas and Propagation, 2019
This paper reports on a flexible and dynamically tunable spoof surface plasmon polariton (SSPP) attenuator for the first time. It consists of an SSPP waveguide and a graphene sandwich structure (GSS).
An-Qi Zhang +4 more
semanticscholar +1 more source
This paper reports on a flexible and dynamically tunable spoof surface plasmon polariton (SSPP) attenuator for the first time. It consists of an SSPP waveguide and a graphene sandwich structure (GSS).
An-Qi Zhang +4 more
semanticscholar +1 more source
Graphene-Based Dynamically Tunable Attenuator on a Coplanar Waveguide or a Slotline
IEEE transactions on microwave theory and techniques, 2019In this paper, we propose a novel type of dynamically tunable graphene-based attenuator fabricated on a coplanar waveguide (CPW) or a slotline. We obtain this type of attenuator by depositing a graphene sandwich structure (GSS) on a CPW or a slotline ...
An-Qi Zhang +3 more
semanticscholar +1 more source
Monolithically Integrated RF MEMS-Based Variable Attenuator for Millimeter-Wave Applications
IEEE transactions on microwave theory and techniques, 2019This paper reports a millimeter-wave radio frequency (RF) microelectromechanical systems (MEMS)-based variable attenuator implemented by monolithically integrating CPW-based hybrid couplers with lateral MEMS varactors on a silicon-on-insulator (SOI ...
Navjot K. Khaira +2 more
semanticscholar +1 more source
Dynamically Tunable Substrate-Integrated-Waveguide Attenuator Using Graphene
IEEE transactions on microwave theory and techniques, 2018In this paper, a dynamically tunable substrate-integrated-waveguide (SIW) attenuator using graphene is first presented. Two graphene sandwich structures are placed inside an SIW, which serve as conductivity-tunable E-plane septum.
An-Qi Zhang +4 more
semanticscholar +1 more source
Graphene-Based Dynamically Tunable Attenuator on Spoof Surface Plasmon Polaritons Waveguide
IEEE Microwave and Wireless Components Letters, 2019A dynamically tunable attenuator is proposed by integrating two graphene sandwich structures (GSSs) into a spoof surface plasmon polaritons (SSPPs) waveguide. The attenuator is formed by locating two GSSs symmetrically on both sides of the SSPP waveguide.
D. Tian +3 more
semanticscholar +1 more source
Impact attenuator conceptual design using lightweight materials and meta-modeling technique
Materials Testing, 2019This study focuses on the use of lightweight design and optimization methodology as a computer aided approach to enhancing the conceptual design of an impact attenuator for a Formula SAE race car.
E. Albak +3 more
semanticscholar +1 more source
A 5-bit, 0.25 dB Step Variable Attenuator at E-Band
Radio Frequency Integrated Circuits Symposium, 2018A variable attenuator operating over 71 GHz to 76 GHz is presented. The circuit design, based on a differential ∏ attenuator, allows for precise control over the attenuation due to a feedback control circuit. When manufactured using the CMOS portion of a
T. Ross +3 more
semanticscholar +1 more source
2021
An impact attenuator is a device used to protect a vehicle from damage during a collision, thus preventing the risk of injury to the driver and passengers. Attenuators are used both on public roads and on racetracks as well as built into the vehicles themselves.
openaire +2 more sources
An impact attenuator is a device used to protect a vehicle from damage during a collision, thus preventing the risk of injury to the driver and passengers. Attenuators are used both on public roads and on racetracks as well as built into the vehicles themselves.
openaire +2 more sources